/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.elasticsearch.test.store;

import org.apache.lucene.store.Directory;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.shard.AbstractIndexShardComponent;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.DirectoryService;
import org.elasticsearch.test.ImmutableTestCluster;

import java.io.IOException;
import java.util.Random;

public class MockRamDirectoryService extends AbstractIndexShardComponent implements DirectoryService {

    private final MockDirectoryHelper helper;
    private final DirectoryService delegateService;

    @Inject
    public MockRamDirectoryService(ShardId shardId, Settings indexSettings) {
        super(shardId, indexSettings);
        final long seed = indexSettings.getAsLong(ImmutableTestCluster.SETTING_INDEX_SEED, 0l);
        Random random = new Random(seed);
        helper = new MockDirectoryHelper(shardId, indexSettings, logger, random, seed);
        delegateService = helper.randomRamDirectoryService();
    }

    @Override
    public Directory[] build() throws IOException {
        return helper.wrapAllInplace(delegateService.build());
    }

    @Override
    public long throttleTimeInNanos() {
        return delegateService.throttleTimeInNanos();
    }

    @Override
    public void renameFile(Directory dir, String from, String to) throws IOException {
        delegateService.renameFile(dir, from, to);
    }

    @Override
    public void fullDelete(Directory dir) throws IOException {
        delegateService.fullDelete(dir);
    }
}
